[ops] How to use hosts with no storage disks

Laurent Dumont laurentfdumont at gmail.com
Fri Oct 15 16:31:02 UTC 2021

If we break it down, I'm not sure a VM will be able to boot with no
volume/root disk from an image though?

I guess you could have the root VM drive all in RAM, but I don't think that
Openstack understands that.

On Fri, Oct 15, 2021 at 8:55 AM Jeremy Stanley <fungi at yuggoth.org> wrote:

> On 2021-10-15 11:51:49 +0100 (+0100), A Monster wrote:
> > In Openstack, is it possible to create compute nodes with no hard
> > drives and use PXE in order to boot the host's system
> [...]
> This question is outside the scope of OpenStack itself, unless
> you're using another OpenStack deployment to manage the physical
> servers (for example TripleO has an "undercloud" which uses Ironic
> to manage the servers which then comprise the "overcloud" presented
> to users). OpenStack's services start on already booted servers, so
> you can in theory use any mechanism you like, including PXEboot, to
> boot those physical servers. I understand OpenStack Ironic is a
> great solution to this problem though, and can be set up entirely
> stand-alone with its Bifrost installer.
> --
> Jeremy Stanley
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